Improvement in paper-bag machines



UNITED STATES BENJAMIN S. BINNEY, 0F SOMERVILLE, MASSACHUSETTS.

IMPROVEMENT lN PAPER-BAG MACHENES.

Specification thrilling part of Letters Patent No. l19,915, dated October 17, M571.`

To all whom it may concern.-

Be it known that I, BENJAMIN S. BINNEY, of Somerville, in the county of Middlesex and State of Massachusetts, have invented a new and Improved Machine for the Manufacture of Paper Bags, of which the following, when taken in connection with the accompanying drawing, is a full and exact specification:

My invention relates to an adjustable machine for making paper bags, and especially to a method of guiding and adjusting the bag by means of a supporter,77 &c., and to the arrangement of doctors, for the purpose of regulating the amount of paste upon the paste-roll, as fully described below.

In the accompanying drawing, Figure 1 is a plan of a machine embodying my invention.

Fig. 2 is a longitudinal section of the same. Fig. 3 is a representation ofthe cam, which, by means of levers, &c., operates upon the knife or cutter near the end of the machine. Fig. 4 is a view ofthe cam, which acts indirectly upon the cutting-bar at the center of the machine. Fig. 5 is a view of the device for regulating the papershaft'. Fig. 6 is a view of the slide which regulates the roll of paper upon the paper-shaft. Fig. 7 shows the construction, position, and method of operation of the supporter which regulates and adjusts the former.

A A are the arms which support the vessel holding the paste, which is spread upon one edge of the roll of paper, thus pasting the side of the bag. It is not represented in the drawing, as I claim nothing new concerning it. B is the paper-shaft. N O are cones sliding upon the shaft B. Attached to the cone O is a slide, I, intended to lit into any of the slots R R It, (see Fig. 6.) To place the roll of paper upon the paper-shaft B, I take oftl the cone N, insert the shaft in the` center of the roll, and push the roll against and upon the cone O. I then place the v cone Nupon the shaft and push it firmly against and into the roll of paper. The paper is then fast and rm upon the shaft. If it requires moving upon the shaft in either direction it is easily done by moving the cones, placing the slide P in any of the slots R R R. In case it should be desirable to `move the shaft B in either direction, provision is found in the device S I U, (see Fig. 5.) The bearing. of the shaft B rests in the inner box u, which is moved in either direction in the outer box S by the screw T. The paper, after leaving the shaft B, passes over the roller C, and, having received its line of paste upon one edge, passes under the shoes l), and thence under the former F. The bottom ofthe shoes D rests against the end ofthe former F, while the upper portion is heldin place by the rod V, which may be lengthened or shortened by means of the screw WV. The object of the shoes l) is to prepare the paper for the former. The paper bends-tightly over the sides of the shoes I), and is thus prepared to coliform itself to the former. The former F extends from the bottom of the shoes D along the surface of the plate G, between the rollersmz p, andV is cut into a comb at the end. As the paper arrives upon the former it bends over the sides, and is held down upon the upper sides by short arms (about which I claim nothing new) until it reaches the rollers n p. Of course, different widths of formers are used, according to the desired size of the bag. An important part of my bag-machine is the supporter E, which serves to keep in place, adjust, and move the former F. This supporter E (see Fig. 7) is formed in two pieces, and is firmly attached to the former by means of a dovetail plate, d, which is riveted to the former. The supporteris operated by means of the two screws a and b. The screw r2 fastens the box y2 to the supporter. 'Ihe screw t2 passes through an opening in the supporter large enough to allow the supporter to swing slightly and fasten into the box y2. The screw r2 is thus made the 'fulcrum of a lever. When it is desirable to draw the former longitudinally in either direction the screw a is used, it passing through the box y2 a triiie below the screw r2. When the former requires to be raised or depressed the screw b is used, as it operates upon the finger c of the supporter, thus pushing the foot in either direct-ion. The right side of the box (as seen in Fig. 7) is fastened to the brace or frame z. The dovetail plate d, which ts into the supporter E, is made perfectly round, so that, when the paper is first placed around the former the supporter is but loosely placed around this dovetail plate, the two pieces of the supporter being loosely put together. The machine is then started and the passing paper adjusts the former and places it in its proper position. When the former has been adjusted by the paper the supporter is screwed tightly against the A the slotted bent arms .f2 and w?.

dovetail-plate f7. Gr is a plate resting` upon the tables X and Y, and fastened to the table X. As formers of different widths are used, various gauges, placed upon the plate and tables, require to be conformed to the different formers. To do this it is necessary that the tables X and Y should be moved simultaneously apart or nearer together, the table X carrying with it, of course, the plate G. This is accomplished by means of the bevel-gearsfg and h i, connected by a shaft; the bevel gears acting upon the right-and-left screws j and k, thus bringing the tables X and Y nearer together or further apart at will, the table X carrying with it the plate G.

" u pqr" are nrollers revolved by ordinary spurgearing. The rollers a and p press upon the upper and lower sides ofthe formerF and by their revolutions draw the paper which is on both sides of the former toward the cuttingbar I The roller r is geared to a shaft, f1, upon which are iixed two cams, el and L1. Figs. 3 and 4; show their relative positions with special reference to the grooves. The cam c1, represented in Fig. 4, acts indirectly upon the cutting-bar I. g is the groove of the cam. As the cam revolves it operates upon theoscillating lever c1, (of which dl is the fulcrum,) which, by means of the vibratin g lever b1, acts upon the short lever h which is iixed to the rock-shaft al. The motion is communicated to the cutting-bar I by means of a lever, y, which is fixed to the rock-shaft al. The rod V2 runs through the beam t, a-nd is kept from dropping by means of a projection, which serves as astop. As the stud in the groove g1 passes the sharpest point, the cutting-bar I rises and pushes the paper quickly against the knife-plate I-I and the end of the former F, tearing the paper in the usual comb-shape. When the paper has been taken oft' by the cutting-bar I it passes between the rollers q o", and is then conducted, by means of elastic cord or its equivalent (stretchin g from the roller r to the small roller c2) to the rear portion of the machine, there to be finished into a complete bag. As soon as the partly-formed bag is carried far enough to lap over the rollers c2 and d? the knife K descends, pastes the bag, pushes it between the rollers e2 and d2 bending over the end, and allowing it to descend into a receptacle beneath by running down between the two said rollers. This knife K is operated indirectly by means of the cam Z1, (see Fig. 3.) m is the groove. This cam is, like the cam @1,xed upon the sh aft f1, and moves the lever a', which is fixed to the rock-shaft p. Fixed to the shaft p are also the two levers q and 1", which, by means ofthe rods t1 and a?, lift and depress the knife K by means of its bars b2, which move in As the stud reaches its sharpest point in the groove m the knife K drops. The knife K receives its paste from the paste-roll L, which revolves in the pastebox k2. The paste-roll L is revolved by means of the worm-screw and wheel and jz, motion being communicated to them by bevel-gears. Before the knife drops it scrapes off the paste upon the roller L and carries it to the bag when it descends. The amount of paste given to the knife by the paste-roll is regulated by means of the sliding doctors M M. These doctors slide in a' frame, and are of various widths. They serve to scrape the paste from the paste-roll L. Enough of them are placed in the frame to scrape all the paste from the roller except just enough to spread the end of the bag. A larger bag requires less doctors, while a smaller bag,of course,zre quires more. The folding-roller e2 is kept close to the roller d? by means of the spring h2 and the lever g2. A spring and lever is placed at each end of the folding-roller e2. It is highly necessary that there should be a device to furnish elasticity at this point, as two or more thicknesses of paper are obliged to pass between the two rollers 62 and cl2. There is another point in my machine where elasticity is required 5 in fact, there are two points, viz., at the rollers a p and at the rollers q r. This is secured by means of saddles J a2 at each end of the shafts of the rollers q n. One of these saddles is represented in Fig. 2. The piece la is pressed upon the rollers by means of the springs 1l and j. Any inequality in the paper will pass easily between the rollers without any difficulty. Thus perfect elasticity is secured both at the cutting-bar I and at the cutter K.

My machine is easily kept in repair, as every part of it is accessible. That it will make perfeet bags ha-s been proved by actual test, and

the good work which it performs is accompaniedV by great speed. K

I have not thought it necessary to describe all the methods of communicating power to different parts of my machine, as they are the usual means, and not a part of my invention.

Having thus fully described my invention, what I claim and desire to secure by Letters Patent, is the 'application to a machine for making paper bags of the following combinations and devices:

1. The combination of the dovetail plate cl and supporter E with the adjusting-screws a b, box y2, and screws r2 t2, the whole being combined, arranged, and constructed as and for the purposes hereinbefore set forth.

2. The sliding doctors M M, arranged as and for the purpose above set forth.

BENJAMIN S. BINNEY. 

